Radiation Reabsorption Using Plasma Spectroscopic Diagnostics of High Density He Arc Plasmas

Md Anwarul Islam and Shinichi Namba
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Md Anwarul Islam: Japan Bangla Bridge Research Center, Bangladesh
Shinichi Namba: Hiroshima University, Japan

International Journal of Research and Scientific Innovation, 2024, vol. 11, issue 3, 683-688

Abstract: It is possible to determine the plasma parameters such as electron temperature/density and the external field by observing the light emission spectroscopically from the plasmas. The so-called plasma spectroscopy is used as one of the non-invasive plasma diagnostic methods which investigates the plasma dynamics. However, if we simply treat the effect of radiation reabsorption, which is neglected in the usual analytic model, the observed plasma may impair the understanding of this observation. It deals with the effects of radiation reabsorption on plasma spectroscopic diagnosis. The efforts will be made for linear divertor simulators and plasma spectrometers for high-density LHD plasmas where the optical thickness cannot be ignored. Thus, we discuss the influence of radiation reabsorption in the observations using He arc plasmas.

Date: 2024
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